Incinerator system for on-site completion fluid removal and methods of using the same

ABSTRACT

An incinerator system includes an evaporator tank having a fluid inlet, a steam vent, and an evaporation cavity and a heating assembly having a plurality of heating rods mounted on a rod spacing mechanism and disposed in the evaporation cavity of the evaporator tank. The rod spacing mechanism is configured to move the plurality of heating rods within the evaporation cavity. The incinerator system also includes a sensor system having a plurality of sensors positioned to perform one or more sensor measurements in the evaporation cavity and a programmable logic controller communicatively coupled to the sensor system and the heating assembly. The programmable logic controller is configured to instruct the rod spacing mechanism to move at least one of the plurality of heating rods based on the one or more sensor measurements.

BACKGROUND Field

The present specification generally relates to methods for managing andincinerating a completion fluid during oil well construction andtesting.

Technical Background

During oil well construction, once a target depth of the oil well isreached, a completion fluid is used to assist with the final operationsprior to initiation of production. These final operations may includeinstalling downhole hardware, such as screens, production liners,packers, and downhole valves. Completion fluid is used to control theoil well should the installation of this downhole hardware fail,preventing or reducing damage to the oil well and the downhole hardware.Once downhole hardware is installed, the oil well is cleaned and thehealth status of the oil well is tested.

The cleaning process includes removing the completion fluid. Completionfluid is often water based and is heavier than oil or gas. Thus, failingto remove the completion fluid may affect flaring efficiency during oilwell operation and may even prevent flaring. This may lead toenvironmental impact, especially offshore, as the heavier completionfluid may carry hydrocarbons into the ocean. Currently, removedcompletion fluid is stored in storage tanks. However, storage tank spaceis limited on an oil rig. When the storage tanks are full, the cleaningprocess is paused to transport full storage tanks to shore and transportempty storage tank back to the oil rig, increasing operation costs andoil well construction time.

Accordingly, there is a desire for systems and methods for improvedmanagement and disposal of completion fluid on-site.

SUMMARY

According to an embodiment of the present disclosure, an incineratorsystem includes an evaporator tank having a fluid inlet, a steam vent,and an evaporation cavity and a heating assembly having a plurality ofheating rods mounted on a rod spacing mechanism and disposed in theevaporation cavity of the evaporator tank. The rod spacing mechanism isconfigured to move the plurality of heating rods within the evaporationcavity. The incinerator system also includes a sensor system having aplurality of sensors positioned to perform one or more sensormeasurements in the evaporation cavity and a programmable logiccontroller communicatively coupled to the sensor system and the heatingassembly. The programmable logic controller is configured to instructthe rod spacing mechanism to move at least one of the plurality ofheating rods based on the one or more sensor measurements.

According to another embodiment of the present disclosure, a method ofevaporating a completion fluid includes receiving the completion fluidthrough a fluid inlet and into an evaporation cavity of an evaporatortank, the evaporator tank having a steam vent, and heating thecompletion fluid in the evaporation cavity using a heating assemblyhaving a plurality of heating rods mounted on a rod spacing mechanismand disposed in the evaporation cavity, thereby evaporating at least aportion of the completion fluid such that evaporated completion fluidescapes the evaporator tank through the steam vent. The heating assemblyis communicatively coupled to a programmable logic controller and themethod further includes measuring at least one fluid property of thecompletion fluid disposed in the evaporation cavity using a sensorsystem having a plurality of sensors communicatively coupled to theprogrammable logic controller and translating a position of at least oneof the plurality of heating rods within the evaporation cavity using therod spacing mechanism based on a fluid property measurement of theplurality of sensors thereby altering a localized temperature within theevaporation cavity.

Additional features and advantages of the processes and systemsdescribed herein will be set forth in the detailed description whichfollows, and in part will be readily apparent to those skilled in theart from that description or recognized by practicing the embodimentsdescribed herein, including the detailed description which follows, theclaims, as well as the appended drawings.

It is to be understood that both the foregoing general description andthe following detailed description describe various embodiments and areintended to provide an overview or framework for understanding thenature and character of the claimed subject matter. The accompanyingdrawings are included to provide a further understanding of the variousembodiments, and are incorporated into and constitute a part of thisspecification. The drawings illustrate the various embodiments describedherein, and together with the description serve to explain theprinciples and operations of the claimed subject matter.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

The following detailed description of specific embodiments of thepresent disclosure can be best understood when read in conjunction withthe following drawings, where like structure is indicated with likereference numerals and in which:

FIG. 1 schematically depicts an incinerator system comprising anevaporator tank, a sensor system, and a heating system, according to oneor more embodiments shown and described herein;

FIG. 2 schematically depicts a cross section of the evaporator tankalong line A-A of FIG. 1, where a plurality of heating rods of theheating system are in a first arrangement, according to one or moreembodiments shown and described herein; and

FIG. 3 schematically depicts a cross section of the evaporator tankalong line A-A of FIG. 1, where the plurality of heating rods of theheating system are in a second arrangement, according to one or moreembodiments shown and described herein.

DETAILED DESCRIPTION

Reference will now be made to a high efficiency incinerator systemdesigned to super heat a brine/water completion fluid used during oilwell construction. The incinerator system may assist with a cleanupoperation without shutting down an active drilling operation. Theincinerator system includes an evaporator tank having a fluid inlet, awaste outlet, a steam vent, and a heating assembly that includes aplurality of heating rods disposed in the evaporator tank. Theincinerator system also includes a plurality of sensors communicativelycoupled to a programmable logic controller (PLC) and positioned toperform a variety of sensor measurements to measure at least one fluidproperty of the completion fluid. The sensor measurements may be used tooptimize the flow rate of completion fluid entering the evaporator tankand a temperature within the evaporator tank to achieve an optimumsteaming condition. This optimization may be achieved by activelyaltering the spacing between the plurality of heating rods of theheating assembly. Embodiments of an incinerator system for evaporatingthe completion fluid will now be described and, whenever possible, thesame reference numerals will be used throughout the drawings to refer tothe same or like parts.

Referring now to FIG. 1, an incinerator system 100 comprising anevaporator tank 110, a heating assembly 150, a sensor system 160, and aprogrammable logic controller (PLC) 180 is schematically depicted. Theevaporator tank 110 comprises an inner surface 112 facing an evaporationcavity 115 and an outer surface 114 opposite the inner surface 112. Theevaporator tank 110 also comprises a fluid inlet 130, a waste outlet132, and a steam vent 134 each fluidly coupled to the evaporation cavity115. The fluid inlet 130 fluidly couples the evaporator tank 110 to acompletion fluid source 140, for example using a fluid inlet pathway142. In operation, a completion fluid 141 may be directed from thecompletion fluid source 140 into the evaporator tank 110 through thefluid inlet 130, such that the completion fluid 141 undergoes anevaporation process in the evaporator tank 110. The completion fluid 141is a water-brine mixture. Example brines in the completion fluid 141include chlorides, bromides and formates. Completion fluid 141 is usedto control the oil well after the target depth of the oil well isreached, but is removed before operation of the oil well. Using theincinerator system 100 described herein, completion fluid 141 may beevaporated on site, minimizing the amount of waste product that needs tobe removed from the drilling site and removing the need to transportstorage tanks to shore when construction an off-shore oil well.

As depicted in FIG. 1, the fluid inlet pathway 142 extends between thecompletion fluid source 140 and the fluid inlet 130 of the evaporatortank 110 and a waste pathway 172 extends between the waste outlet 132 ofthe evaporator tank 110 and a waste reservoir 170. The waste outlet 132provides an outlet for removing any solid waste remnants present in theevaporator tank 110 after the completion fluid 141 undergoes anincineration process. The waste remnants do not evaporate and insteadgravitationally collect at the base 124 of the evaporator tank 110. Thewaste outlet 132 is positioned closer to the base 124 of the evaporatortank 110 than the fluid inlet 130 and thus near any waste remnants thatcollect at the base 124 during the incineration process. In someembodiments, a flushing pump 174 is fluidly coupled to the waste outlet132. The flushing pump 174 may facilitate flow of waste remnants thatcollect in the evaporator tank 110 from the waste outlet 132 to thewaste reservoir 170. For example, the flushing pump 174 may introduce acleaning fluid into the evaporator tank 110, for example, though thewaste outlet 132, and then removing the cleaning fluid together withwaste remnants, for example, back through the waste outlet 132 and intothe waste reservoir 170. Moreover, as most of the completion fluid 141evaporates, the cleaning fluid and waste remnants have a lower totalvolume than the volume of completion fluid 141 introduced into theevaporator tank 110, reducing the storage needed to remove completionfluid 141 from the oil well.

In some embodiments, the fluid inlet 130 includes an inlet choke 131 andthe waste outlet 132 includes a waste choke 133. The inlet choke 131 andthe waste choke 133 are both actuatable to selectively alter thediameter of the fluid inlet 130 and the waste outlet 132, respectively,and optionally close the fluid inlet 130 and the waste outlet 132.Altering the diameter of the fluid inlet 130 may alter the flow rate ofcompletion fluid 141 entering the evaporator tank 110 and may controlthe volume of the completion fluid 141 in the evaporator tank 110. Insome embodiments, the incinerator system 100 may further comprise abypass pathway 146 that provides a pathway between the completion fluidsource 140 and the waste reservoir 170 that bypasses the evaporator tank110. A bypass valve 144 fluidly couples the fluid inlet pathway 142 andthe bypass pathway 146 and may be selectively actuated to directcompletion fluid 141 into the evaporator tank 110 or directly into thewaste reservoir 170. The bypass valve 144 and bypass pathway 146 providethe option of collecting the completion fluid 141 directly in the wastereservoir 170 without incinerating the completion fluid 141.

Referring now to FIGS. 2 and 3, which depict a cross section of theevaporator tank 110 along line A-A of FIG. 1, the heating assembly 150comprises a plurality of heating rods 152 mounted on a rod spacingmechanism 154, each disposed in the evaporation cavity 115. The rodspacing mechanism 154 is configured to move the plurality of heatingrods 152 within the evaporation cavity 115 to selectively alter thedistance between adjacent heating rods 152 of the plurality of heatingrods 152. In some embodiments, the rod spacing mechanism 154 is ahydraulic piston mechanism. However, it should be understood that therod spacing mechanism 154 may comprise any mechanism for laterallymoving the plurality of heating rods 152. In some embodiments, the rodspacing mechanism 154 is configured to independently move eachindividual heating rod 152 in any lateral direction along an X-Y plane.By moving individual heating rods 152, the temperature of localizedregions of the evaporation cavity 115 may be altered to optimize theenergy feed and evaporation operation within the evaporation cavity 115.The plurality of heating rods 152 may comprise heating coils thatgenerate heat by converting electrical energy into heat. The electricalenergy supplied to the plurality of heating rods 152 may generated by anenergy source 155, such as a diesel generator, which is electricallycoupled to the plurality of heating rods 152 by an electrical pathway156.

Referring again to FIG. 1, the evaporator tank 110 comprises a chimneytower 120 that peaks at a chimney top 122 and a base 124 opposite thechimney tower 120. The base 124 forms a bottom portion of the evaporatortank 110 and the rod spacing mechanism 154 is positioned in theevaporation cavity 115 on the base 124. In some embodiments, as depictedin FIG. 1, the chimney tower 120 comprises a dome shape. The steam vent134 extends through the chimney tower 120 at the chimney top 122. Thus,when the plurality of heating rods 152 evaporate the completion fluid141, completion fluid vapor rises to the chimney top 122, reaching thesteam vent 134. Moreover, the steam vent 134 comprises a venting valve126, such as a pop-off valve, which seals the steam vent 134 until acertain pressure is reached in the evaporator tank 110 at which theventing valve 126 releases allowing steam to escape the evaporator tank110.

Referring now to FIGS. 1-3, the sensor system 160 comprises a pluralityof sensors 161 positioned to perform one or more sensor measurements inthe evaporation cavity 115. For example, the plurality of sensors 162may be positioned in the evaporation cavity 115 or within sensing rangeof the evaporation cavity 115. The sensor measurements measure fluidproperties of the completion fluid 141. The plurality of sensors 161comprise at least one temperature sensor 162, at least one pressuresensor 164, at least one flow sensor 166, at least one rheology sensor168, and at least one volume sensor 169. Thus, the one or more sensormeasurements may comprise a temperature measurement, a pressuremeasurement, a flow measurement, a rheology measurement, and a volumemeasurement. In some embodiments, the at least one temperature sensor163 and the at least one pressure sensor 164 are positioned in theevaporation cavity 115. The flow sensor 166 and the rheology sensor 168may each be positioned at the fluid inlet 130 and may measure the flowrate and the rheology of the completion fluid 141 entering theevaporation cavity 115 through the fluid inlet 130. Indeed, determiningthe rheology of the completion fluid 141 allows the PLC 180 to determinethe specific heat capacity of the completion fluid 141 entering theevaporator tank 110. Further, the volume sensor 169 may be positioned inthe evaporator cavity 115 or at the fluid inlet 130. While the flowsensor 166 and the rheology sensor 168 are depicted as distinct sensorsin FIGS. 2 and 3, it should be understood that embodiments arecontemplated that comprise a single sensor configured to measure boththe flow rate and the rheology of the completion fluid 141 at the fluidinlet 130. Indeed, it should be understood that sensors configured tomeasure any combination of the sensor measurements described herein arecontemplated.

In operation, the PLC 180 may receive sensor signals from the pluralityof sensors 161 which provide the PLC 180 with sensor measurementsregarding one or more fluid properties of the completion fluid 141,including temperature, pressure, flow rate, volume, and rheology. ThePLC 180 may be any device or combination of components comprising aprocessor and non-transitory computer readable memory. The PLC 180 iscommunicatively coupled to the other components of the incineratorsystem 100, such as the heating assembly 150, the sensor system 160, theinlet choke 131, the waste choke 133, the bypass valve 144, and theflushing pump 174, by a communication path 182, which may comprise awireless path, a wired path, or a combination thereof. As used herein,the term “communicatively coupled” means that coupled components arecapable of exchanging signals with one another such as, for example,electrical signals via conductive medium, electromagnetic signals viaair, optical signals via optical waveguides, and the like.

Referring still to FIGS. 1-3, in some embodiments, at least some of theplurality of sensors 161 are arranged in a plurality of sensor arrays162. Each sensor array 162 comprises multiple sensors 161 arrangedlengthwise along the inner surface 112 of evaporator tank 110. Eachsensor array 162 includes at least one temperature sensor 163 and maycomprise a combination of temperature sensors 163 and pressure sensors164. In some embodiments, the plurality of sensor arrays 162 areuniformly spaced from one another circumferentially along the innersurface 112 of the evaporator tank 110.

In the embodiment depicted in FIGS. 2 and 3, the plurality of sensorarrays 162 include a first sensor array 162A, a second sensor array162B, a third sensor array 162C, and a fourth array sensor 162D, whichare uniformly spaced from one another circumferentially along the innersurface 112 of the evaporator tank 110. While four sensor arrays162A-162D are shown in FIGS. 2 and 3, more than four sensor arrays 162and less than four sensor arrays 162 are contemplated. In FIGS. 2 and 3,the first through fourth sensor arrays 162A-162D are depicted in auniform spacing in which the first sensor array 162A is located in a“north” or “12 o'clock” position, the second array is located in a“east” or “3 o'clock”, the third sensor array 162C is located in a“south” or “6 o'clock”, and the fourth sensor array 162D is located in a“west” or “9 o'clock” position. In FIGS. 2 and 3, the evaporation cavity115 is partitioned into four quadrants 116A-116D using the first throughfourth sensor arrays 162A-162D as guideposts to provide a framework forunderstanding the relative positioning between the plurality of heatingrods 152.

In operation, the PLC 180 provides control signals to the heatingassembly 150 based on the one or more sensor measurements. For example,the PLC 180 may output control signals to instruct the rod spacingmechanism 154 to move at least one of the plurality of heating rods 152based on one or more sensor measurements, such as temperaturemeasurements, to alter local temperatures within the evaporator tank110. FIGS. 2 and 3 show an example of translating heating rods 152 usingthe rod spacing mechanism 154. FIG. 2 depicts the plurality of heatingrods 152 of the heating assembly 150 in a first arrangement and FIG. 3depicts the plurality of heating rods 152 of the heating assembly 150 ina second arrangement.

FIGS. 2 and 3 each depict a first heating rod 152A, a second heating rod152B, and a third heating rod 152C. In the first arrangement of FIG. 2,the first heating rod 152A is in the first quadrant 116A of theevaporation cavity 115 at position P_(A1), the second heating rod 152Bis in the second quadrant 116B of the evaporation cavity 115 at positionP_(B1), and the third heating rod 152C is in the third quadrant 116C ofthe evaporation cavity 115 at position P_(C1). In the first arrangement,the first heating rod 152A is spaced apart from the second heating rod152B by a distance D_(A1) and the third heating rod 152C is spaced apartfrom the second heating rod 152B by a distance D_(C1).

In the second arrangement of FIG. 3, both the first heating rod 152A andthe third heating rod 152C have been moved toward the second heating rod152B using the rod spacing mechanism 154. In particular, the firstheating rod 152A has been moved by the rod spacing mechanism 154 fromthe first position P_(A1) to a second position P_(A2) and the thirdheating rod 152C has been moved by the rod spacing mechanism 154 fromthe first position P_(C1) to a second position P_(C2). Both the secondpositions P_(A1), P_(C1) are disposed in the second quadrant 116B andare spaced apart from the second heating rod 152B by a distance D_(A2),D_(C2), respectively. This movement may be triggered by a localizedtemperature measurement in the second quadrant of a lower temperaturethan desired and the movement of the first and third heating rod 152A,152B toward the second heating rod 152B increased the localizedtemperature in the second quadrant 116B of the evaporation cavity 115.

It should be understood that FIGS. 2 and 3 provide an example oftranslating the heating rods 152 based on at least one fluid property ofthe completion fluid 141 (e.g., temperature) and that each of theheating rods 152 are selectively translatable to alter localtemperatures and/or the overall temperature of the completion fluid 141within the evaporation cavity 115. In some embodiments, the heating rods152 may be translated to alter local temperatures within the evaporationcavity 115 to maintain a uniform temperature with the evaporation cavity115. Indeed, in the example depicted in FIGS. 2 and 3, the localtemperature in the second quadrant 116B may be lower than the localtemperature in the remaining quadrants, prompting movement of the firstand third heating rods 162A, 152C to stabilize and homogenize thetemperature throughout the evaporation cavity 115.

In addition to providing control signals to the rod spacing mechanism154, the PLC 180 may provide control signals to additional components ofthe incinerator system 100. For example, the PLC 180 may provide controlsignals to individual heating rods 152 and/or to the energy source 155to adjust the heat generated by at least one of the heating rods 152based on sensor measurements of at least one fluid property of thecompletion fluid 141. Adjusting the heat generated by at least one ofthe heating rods 152 may alter a local temperature in the evaporationcavity 115 and/or the overall temperature in the evaporation cavity 115.For example, the at least one fluid property may comprise a specificheat capacity of the completion fluid 141 measured by a rheology sensor168, which may vary based on additional impurities that may mix with thecompletion fluid 141 in the oil well.

The PLC 180 may also provide control signals to the inlet choke 131 ofthe fluid inlet 130 to alter a diameter of the inlet choke 131 based onone or more sensor measurements of at least one fluid property of thecompletion fluid 141. For example, the PLC 180 to provide controlsignals to the various components of the incinerator system 100, such asthe heating assembly 150 and the inlet choke 131, to maximize theboiling efficiency of the completion fluid 141 in the evaporator cavity115. Boiling efficiency may be increased by aligning the temperature inthe evaporator cavity 115 with the flow rate of the completion fluid 141entering the evaporation cavity 115, the volume of the completion fluid141 in the evaporation cavity 115, and the specific heat capacity of thecompletion fluid 141. In operation, the incinerator system 100 mayvaporize completion fluid 141 within 1-10 second from receiving thecompletion fluid 141 in the evaporator cavity 115.

In view of the foregoing description, it should be understood that theincinerator system described herein includes a plurality of heating rodsdisposed in the evaporator tank and a plurality of sensorscommunicatively coupled to a programmable logic controller (PLC) andpositioned to perform a variety of sensor measurements to measure atleast one fluid property of the completion fluid. The sensormeasurements may be used to optimize the flow rate of completion fluidentering the evaporator tank and a temperature within the evaporatortank to achieve an optimum steaming condition of maximum boilingefficiency. This optimization may be achieved by actively altering thespacing between the plurality of heating rods of the heating assembly,altering the heat generated by the heating rods of the heating system,and altering the flow rate and volume of the completion fluid.

For the purposes of describing and defining the present inventivetechnology, it is noted that reference herein to a variable being a“function” of a parameter or another variable is not intended to denotethat the variable is exclusively a function of the listed parameter orvariable. Rather, reference herein to a variable that is a “function” ofa listed parameter is intended to be open ended such that the variablemay be a function of a single parameter or a plurality of parameters.

It is also noted that recitations herein of “at least one” component,element, etc., should not be used to create an inference that thealternative use of the articles “a” or “an” should be limited to asingle component, element, etc.

It is noted that recitations herein of a component of the presentdisclosure being “configured” in a particular way, to embody aparticular property, or function in a particular manner, are structuralrecitations, as opposed to recitations of intended use. Morespecifically, the references herein to the manner in which a componentis “configured” denotes an existing physical condition of the componentand, as such, is to be taken as a definite recitation of the structuralcharacteristics of the component.

For the purposes of describing and defining the present inventivetechnology it is noted that the terms “substantially” and “about” areutilized herein to represent the inherent degree of uncertainty that maybe attributed to any quantitative comparison, value, measurement, orother representation. The terms “substantially” and “about” are alsoutilized herein to represent the degree by which a quantitativerepresentation may vary from a stated reference without resulting in achange in the basic function of the subject matter at issue.

Having described the subject matter of the present disclosure in detailand by reference to specific embodiments thereof, it is noted that thevarious details disclosed herein should not be taken to imply that thesedetails relate to elements that are essential components of the variousembodiments described herein, even in cases where a particular elementis illustrated in each of the drawings that accompany the presentdescription. Further, it will be apparent that modifications andvariations are possible without departing from the scope of the presentdisclosure, including, but not limited to, embodiments defined in theappended claims. More specifically, although some aspects of the presentdisclosure are identified herein as preferred or particularlyadvantageous, it is contemplated that the present disclosure is notnecessarily limited to these aspects.

It is noted that one or more of the following claims utilize the term“wherein” as a transitional phrase. For the purposes of defining thepresent inventive technology, it is noted that this term is introducedin the claims as an open-ended transitional phrase that is used tointroduce a recitation of a series of characteristics of the structureand should be interpreted in like manner as the more commonly usedopen-ended preamble term “comprising.

1. An incinerator system comprising: an evaporator tank comprising afluid inlet, a steam vent, and an evaporation cavity; a heating assemblycomprising a plurality of heating rods mounted on a rod spacingmechanism and disposed in the evaporation cavity of the evaporator tank,wherein the rod spacing mechanism is configured to move the plurality ofheating rods within the evaporation cavity; a sensor system comprising aplurality of sensors positioned to perform one or more sensormeasurements in the evaporation cavity; and a programmable logiccontroller communicatively coupled to the sensor system and the heatingassembly, wherein the programmable logic controller is configured toinstruct the rod spacing mechanism to move at least one of the pluralityof heating rods based on the one or more sensor measurements.
 2. Theincinerator system of claim 1, wherein the programmable logic controlleris communicatively coupled to the plurality of heating rods and isconfigured to alter the heat generated by at least one of the pluralityof heating rods based on the one or more sensor measurements.
 3. Theincinerator system of claim 1, wherein the programmable logic controlleris communicatively coupled to an inlet choke of the fluid inlet and isconfigured to alter a diameter of the inlet choke based on the one ormore sensor measurements.
 4. The incinerator system of claim 1, wherein:the plurality of sensors are arranged in a plurality of sensor arrays;each sensor array comprises multiple sensors arranged lengthwise alongan inner surface of the evaporator tank; each sensor array includes atleast one temperature sensor; and the plurality of sensor arrays areuniformly spaced from one another circumferentially along the innersurface of the evaporator tank.
 5. The incinerator system of claim 4,wherein at least one sensor of each sensor array comprises a pressuresensor.
 6. The incinerator system of claim 1, wherein at least one ofthe plurality of sensors comprises a temperature sensor, at least one ofthe plurality of sensors comprises a pressure sensor, and at least oneof the plurality of sensors comprises a rheology sensor.
 7. Theincinerator system of claim 1, wherein the sensor system furthercomprises a flow sensor and a rheology sensor each disposed in the fluidinlet.
 8. The incinerator system of claim 1, wherein the evaporator tankcomprises a chimney top, the steam vent extends through the chimney top,and the steam vent comprises a venting valve.
 9. The incinerator systemof claim 1, wherein: the evaporator tank further comprises a wasteoutlet and a base; and the waste outlet is closer to the base than thefluid inlet.
 10. The incinerator system of claim 1, wherein the rodspacing mechanism is a hydraulic piston mechanism.
 11. The incineratorsystem of claim 1, wherein: the fluid inlet is fluidly coupled to acompletion fluid source by a fluid input pathway; a waste reservoir isfluidly coupled to a waste outlet of the evaporator tank by a wastepathway; a bypass valve is fluidly coupled to the fluid input pathwayand a bypass pathway; and the bypass pathway is fluidly coupled to thewaste reservoir, bypassing the evaporator tank.
 12. The incineratorsystem of claim 11, wherein a flushing pump is fluidly coupled to thewaste outlet.
 13. A method of evaporating a completion fluid, the methodcomprising: receiving the completion fluid through a fluid inlet andinto an evaporation cavity of an evaporator tank, the evaporator tankcomprising a steam vent; heating the completion fluid in the evaporationcavity using a heating assembly comprising a plurality of heating rodsmounted on a rod spacing mechanism and disposed in the evaporationcavity, thereby evaporating at least a portion of the completion fluidsuch that evaporated completion fluid escapes the evaporator tankthrough the steam vent, wherein the heating assembly is communicativelycoupled to a programmable logic controller; measuring at least one fluidproperty of the completion fluid disposed in the evaporation cavityusing a sensor system comprising a plurality of sensors communicativelycoupled to the programmable logic controller; and translating a positionof at least one of the plurality of heating rods within the evaporationcavity using the rod spacing mechanism based on a fluid propertymeasurement of the plurality of sensors thereby altering a localizedtemperature within the evaporation cavity.
 14. The method of claim 13,further comprising adjusting the heat generated by at least one of theplurality of heating rods based on the at least one fluid property ofthe completion fluid measured by the plurality of sensors.
 15. Themethod of claim 14, wherein the at least one fluid property comprises aspecific heat capacity of the completion fluid measured by a rheologysensor of the plurality of sensors.
 16. The method of claim 13, furthercomprising altering a diameter of an inlet choke disposed in the fluidinlet of the evaporator tank based on the at least one fluid property ofthe completion fluid measured by the sensor system.
 17. The method ofclaim 13, wherein the completion fluid comprises a water-brine mixture.18. The method of claim 13, wherein the at least one fluid propertymeasured by the plurality of sensors is temperature, pressure, or both.19. The method of claim 13, wherein the at least one fluid propertymeasured by the plurality of sensors is flow rate of the completionfluid entering the evaporation cavity through the fluid inlet, rheologyof the completion fluid entering the evaporation cavity through thefluid inlet, or both.
 20. The method of claim 13, wherein: the pluralityof sensors are arranged in a plurality of sensor arrays; each sensorarray comprises multiple sensors arranged lengthwise along an innersurface of the evaporator tank; each sensor array includes at least onetemperature sensor; and the plurality of sensor arrays are uniformlyspaced from one another circumferentially along the inner surface of theevaporator tank.